POROUS CARBON ANODES FOR THE DIRECT METHANOL FUEL-CELL .1. THE ROLE OF THE REDUCTION METHOD FOR CARBON SUPPORTED PLATINUM-ELECTRODES

被引：89

作者：

GOODENOUGH, JB ^{[1
]}

HAMNETT, A ^{[1
]}

KENNEDY, BJ ^{[1
]}

MANOHARAN, R ^{[1
]}

WEEKS, SA ^{[1
]}

机构：

[1] UNIV OXFORD,S PARKS RD,OXFORD OX1 3QR,ENGLAND

来源：

ELECTROCHIMICA ACTA | 1990年 / 35卷 / 01期

关键词：

D O I：

10.1016/0013-4686(90)85059-V

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The efficiency of platinised porous-carbon electrodes for the electrooxidation of methanol in H2SO4 is found to vary quite markedly with the method used to deposit the platinum. This is shown to be a consequence of both the size and the electronic nature of the platinum crystallites. The most efficient electrodes are those that possess both small crystallite sizes, ∼ 20 Å diameter, and a minimum amount of ionic platinum species as identified by XPS studies. A comparison is drawn with optimised platinised carbon electrodes for oxygen reduction, and an explanation for the different requirements of these two types of electrode suggested. © 1990.

引用

页码：199 / 207

页数：9

共 27 条

[1] PLATINUM CRYSTALLITE SIZE CONSIDERATIONS FOR ELECTROCATALYTIC OXYGEN REDUCTION .1. [J].